Ben Stull
30 lines
1.3 KiB
TypeScript
30 lines
1.3 KiB
TypeScript
import { describe, it, expect } from "vitest";
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import { detectDiagramType, diffMermaid } from "../src/mermaidDiff";
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describe("detectDiagramType", () => {
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it("detects flowchart from `flowchart` / `graph` headers", () => {
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expect(detectDiagramType("flowchart LR\n a-->b")).toBe("flowchart");
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expect(detectDiagramType("graph TD\n a-->b")).toBe("flowchart");
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expect(detectDiagramType(" \n%% c\ngraph TD")).toBe("flowchart");
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});
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it("detects sequence from `sequenceDiagram`", () => {
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expect(detectDiagramType("sequenceDiagram\n A->>B: hi")).toBe("sequence");
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});
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it("returns `other` for unsupported types", () => {
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expect(detectDiagramType("classDiagram\n class A")).toBe("other");
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expect(detectDiagramType("stateDiagram-v2\n s1 --> s2")).toBe("other");
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expect(detectDiagramType("")).toBe("other");
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});
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});
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describe("diffMermaid", () => {
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it("falls back for an unsupported diagram type", () => {
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expect(diffMermaid("classDiagram\n class A", "classDiagram\n class B")).toEqual({ kind: "fallback" });
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});
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it("falls back (never throws) when the differ throws", () => {
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// A deliberately malformed flowchart still degrades gracefully.
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const r = diffMermaid("flowchart LR", "flowchart LR\n a -->");
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expect(["augmented", "fallback"]).toContain(r.kind);
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});
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});
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